To build RPM pakcages for Fedora, follow these steps:
 cp packaging/rpm/libgit2.spec ~/rpmbuild/SPECS
 cd ~/rpmbuild/SOURCES
 wget https://github.com/downloads/libgit2/libgit2/libgit2-0.16.0.tar.gz
 cd ~/rpmbuild/SPECS
 rpmbuild -ba libgit2.spec